An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.
CVE-2020-36385
Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 7.8; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.8
- EG Score
- 7.8(medium)
- EG Risk
- 40(Track)EG Risk 40/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity78% × 45%Exploitation1% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 72%
- KEV
- Not listed
Published
June 7, 2021
Last Modified
November 21, 2024
References (12)
- cve@mitrehttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10
- cve@mitrehttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5449e74802c1112dea984aec8af7a33c4516af1
- cve@mitrehttps://security.netapp.com/advisory/ntap-20210720-0004/
- cve@mitrehttps://sites.google.com/view/syzscope/kasan-use-after-free-read-in-ucma_close-2
- cve@mitrehttps://syzkaller.appspot.com/bug?id=457491c4672d7b52c1007db213d93e47c711fae6
- cve@mitrehttps://www.starwindsoftware.com/security/sw-20220802-0002/
- af854a3a-2127-422b-91ae-364da2661108https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10
- af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5449e74802c1112dea984aec8af7a33c4516af1
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210720-0004/
- af854a3a-2127-422b-91ae-364da2661108https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-ucma_close-2
- af854a3a-2127-422b-91ae-364da2661108https://syzkaller.appspot.com/bug?id=457491c4672d7b52c1007db213d93e47c711fae6
- af854a3a-2127-422b-91ae-364da2661108https://www.starwindsoftware.com/security/sw-20220802-0002/
Vendor Advisories for CVE-2020-36385(13)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2022:0157Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel security update
- RHSA-2021:4871Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel security and bug fix update
- RHSA-2021:4875Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel-rt security and bug fix update
- RHSA-2021:4777Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel security and bug fix update
- RHSA-2021:4779Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel-rt security and bug fix update
- RHSA-2021:4774Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel security update
- RHSA-2021:4770Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel security and bug fix update
- RHSA-2021:4768Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel security update
- +5 more
Patch Availability(15)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | kernel-0:2.6.32-754.43.1.el6 | 2022-01-18 | redhat |
| redhat | redhat-virtualization-host-0:4.3.20-20211202.1.el7_9 | 2021-12-08 | redhat |
| redhat | kpatch-patch | 2021-12-07 | redhat |
| redhat | kernel-0:4.18.0-193.70.1.el8_2 | 2021-11-30 | redhat |
| redhat | kernel-rt-0:4.18.0-193.70.1.rt13.120.el8_2 | 2021-11-30 | redhat |
| redhat | kernel-0:3.10.0-327.102.1.el7 | 2021-11-23 | redhat |
| redhat | kernel-0:3.10.0-957.86.1.el7 | 2021-11-23 | redhat |
| redhat | kernel-rt-0:3.10.0-1160.49.1.rt56.1189.el7 | 2021-11-23 | redhat |
| redhat | kernel-0:3.10.0-514.95.1.el7 | 2021-11-23 | redhat |
| redhat | kernel-0:3.10.0-1160.49.1.el7 | 2021-11-23 | redhat |
| redhat | kernel-0:3.10.0-693.95.1.el7 | 2021-11-16 | redhat |
| redhat | kernel-0:4.18.0-147.57.1.el8_1 | 2021-11-16 | redhat |
| redhat | kernel-rt-0:4.18.0-305.25.1.rt7.97.el8_4 | 2021-11-02 | redhat |
| redhat | kernel-0:4.18.0-305.25.1.el8_4 | 2021-11-02 | redhat |
| redhat | kernel-0:3.10.0-1062.59.1.el7 | 2021-10-26 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(4 across 4 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | — | 5.10.4-1 | — |
Debian:12(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | — | 5.10.4-1 | — |
Debian:13(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | — | 5.10.4-1 | — |
Debian:14(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | — | 5.10.4-1 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(7)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
- Red HatRHSA-2021:4122IMPORTANT2021-06-07
RHSA-2021:4122 — Important
- Red HatRHSA-2021:4597IMPORTANT2021-06-07
RHSA-2021:4597 — Important
- Red HatRHSA-2021:4773IMPORTANT2021-06-07
RHSA-2021:4773 — Important
- Red HatRHSA-2021:4798IMPORTANT2021-06-07
RHSA-2021:4798 — Important
- Red HatRHSA-2021:4859IMPORTANT2021-06-07
RHSA-2021:4859 — Important
- Red HatRHSA-2021:4971IMPORTANT2021-06-07
RHSA-2021:4971 — Important
- Red HatRHSA-2021:5035IMPORTANT2021-06-07
RHSA-2021:5035 — Important
Data Freshness Timeline
(refreshed 8× in last 7d / 29× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 119 total refreshes for this CVE.
- 2026-08-20 22:52 UTCEPSS rescore
- 2026-08-20 01:45 UTCOSV refresh
- 2026-08-19 17:00 UTCEPSS rescore
- 2026-08-18 13:44 UTCEPSS rescore
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- 2026-08-07 16:23 UTCEPSS rescore
- 2026-08-06 13:43 UTCEPSS rescore
- 2026-08-04 20:48 UTCOSV refresh
- 2026-08-04 15:06 UTCEPSS rescore
- 2026-08-04 10:34 UTCEPSS rescore
- 2026-08-02 02:23 UTCEPSS rescore
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- 2026-07-23 14:15 UTCEPSS rescore
- 2026-07-23 14:15 UTCEPSS rescore
- 2026-07-23 01:53 UTCEG score recompute
- 2026-07-22 22:39 UTCEG score recompute
- 2026-07-22 14:05 UTCEPSS rescore
- 2026-07-21 15:22 UTCEPSS rescore
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- 2026-07-19 02:26 UTCEPSS rescore
- 2026-07-19 02:26 UTCEPSS rescore
- 2026-07-18 18:59 UTCOSV refresh
- 2026-07-16 16:59 UTCEPSS rescore
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- 2026-07-09 19:07 UTCEPSS rescore
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- 2026-07-07 13:43 UTCEPSS rescore
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- 2026-07-04 06:29 UTCEPSS rescore
- 2026-07-04 06:29 UTCEPSS rescore
- 2026-07-01 02:18 UTCOSV refresh
- 2026-06-30 23:20 UTCEPSS rescore
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- 2026-06-29 14:04 UTCEPSS rescore
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- 2026-06-25 13:48 UTCEPSS rescore
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- 2026-06-22 14:23 UTCEPSS rescore
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- 2026-06-21 14:54 UTCEPSS rescore
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- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-19 19:24 UTCEPSS rescore
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- 2026-06-18 17:50 UTCEPSS rescore
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- 2026-06-15 17:46 UTCEPSS rescore
- 2026-06-14 23:15 UTCEPSS rescore
- 2026-06-13 22:58 UTCEPSS rescore
- 2026-06-13 04:13 UTCOSV refresh
- 2026-06-12 23:10 UTCEPSS rescore
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- 2026-06-05 22:45 UTCEPSS rescore
- 2026-06-05 22:45 UTCEPSS rescore
- 2026-06-05 06:08 UTCEPSS rescore
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat
- CVE-2001-0825EG 10.0HIGH
- CVE-2001-1009EG 10.0EPSS p93HIGH
- CVE-2001-0554EG 10.0EPSS p98HIGH
- CVE-2001-1162EG 10.0EPSS p96HIGH
- CVE-2001-0414EG 10.0EPSS p100HIGH
- CVE-2001-0191EG 10.0EPSS p92HIGH
- CVE-2001-0301EG 10.0EPSS p91HIGH
- CVE-2001-0197EG 10.0EPSS p96HIGH
- CVE-2001-0233EG 10.0EPSS p96HIGH
- CVE-2001-0010EG 10.0EPSS p98HIGH
Frequently asked(5)
What is CVE-2020-36385?
When was CVE-2020-36385 disclosed?
Is CVE-2020-36385 actively exploited?
What is the CVSS score of CVE-2020-36385?
How do I remediate CVE-2020-36385?
Dependency Blast Radius
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